How old is someone named Louis?
The average Louis is 52 years old.
Half of all living Louises are between 35 and 72.
When was Louis popular?
Parents have been choosing Louis less often since its peak in 1921; 1,397 babies got the name in 2025.
Popular names of 1921 · The most popular names of the 1920s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1900s | 10,498 | 0 |
| 1910s | 50,972 | 0 |
| 1920s | 68,296 | 380 |
| 1930s | 48,140 | 5,700 |
| 1940s | 49,708 | 21,000 |
| 1950s | 48,187 | 32,000 |
| 1960s | 33,592 | 27,000 |
| 1970s | 20,321 | 18,000 |
| 1980s | 17,531 | 16,000 |
| 1990s | 14,494 | 14,000 |
| 2000s | 10,272 | 10,000 |
| 2010s | 11,825 | 12,000 |
| 2020s | 8,599 | 8,500 |
How many Louises are still alive?
About 170,000 Louises are alive in the US today. That's 40% of the roughly 410,000 babies named Louis since 1880.
Most Louises ever born have died: the name was most popular in 1921, long enough ago that many of those babies are gone.
What generation is the name Louis?
About one in three living Louises are Baby Boomers, born between 1946 and 1964.
Is Louis an old name?
Yes. Louis is older than 80 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Louis will be 44 in 2056, so its average age will actually fall, as the youngest Louises make up more of the total.
Is Louis a boy or girl name?
Almost entirely boys: 99.4% of living Louises are men.
Names the same age as Louis
NAME TWIN
Louis's name twin is Lewis. Of all 3,713 names on AgeByName, Lewis's age curve is the closest match to Louis's: 96% alike.
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Questions about the name Louis
How old is the average Louis?
The average Louis in the US is 52 years old. The median is 58, so half are older and half younger.
How many people are named Louis?
About 170,000 Louises are alive in the US today, out of roughly 410,000 babies given the name since 1880.
When was the name Louis most popular?
In 1921, when about 7,300 baby boys were named Louis.
Is Louis a Boomer name?
Partly. Baby Boomers are the largest group, about 35% of living Louises, but the name spans several generations.
Estimates from Social Security Administration baby-name records (births 1880–2025) and SSA cohort life tables (2026 Trustees Report). Updated each spring. How we calculate this